2021 SG was bigger than the bolide that blew up over Russia in 2013.
Computer simulations hint that a Mars-sized twin of Earth could be lurking somewhere in the solar system’s mysterious ‘third zone’! Let’s find it.
2021 SG was bigger than the bolide that blew up over Russia in 2013.
Computer simulations hint that a Mars-sized twin of Earth could be lurking somewhere in the solar system’s mysterious ‘third zone’! Let’s find it.